<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
	</head>
		
	<body>
		<script type="text/javascript">
					
					var arr4 = [10,20,30,40];
						
					for(var i=0;i<arr4.length;i++)
					{
						console.log(arr4[i]);
					}
					
					for(var i in arr4)
					{
						console.log(arr4[i]);
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					var arr5 = [
						{id:1,name:"张三",age:18},
						{id:2,name:"李四",age:18},
						{id:3,name:"王五",age:18},
					]
					
					document.write("<table border='1'>");
					document.write("<tr>");
					document.write("<td>学号</td><td>姓名</td><td>年龄</td>")
					document.write("</tr>");
					for(var i in arr5)
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						document.write("<tr>");
						
						var stu = arr5[i];
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						document.write(stu.id)
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						document.write("<td>");
						document.write(stu.name)
						document.write("</td>");
						document.write("<td>");
						document.write(stu.age)
						document.write("</td>");
						
						document.write("</tr>");
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					document.write("</table>");
					
				</script>
	</body>
</html>
